Feeds

Sony to offer patch for 'rootkit' DRM

Fix removes cloaking, but not the 'rootkit'

SANS - Survey on application security programs

Updated Sony BMG said today it will offer a patch for one of its own exploits - one that comes bundled with its music CDs.

The code cloaks itself and by intercepting and redirecting low level windows system calls, forces the audio through a custom player, and restricts the number of CD burns that can be made.

As Sys Internals' Mark Russinovich discovered this week, removing the Sony code using standard anti-malware tools leaves the user with an inoperable CD drive.

Russinovich also pointed out that because the cloaking technique it used to hide itself was so crude, malware authors could hide their own nefarious programs on users hard disks using Sony's DRM software.

However, the patch that Sony will offer doesn't remove the 'rootkit' DRM: it only makes the hidden files visible.

Macintosh and Linux users are unaffected by the DRM kit, which only works on Windows PCs.

It isn't quite the "bombs" the RIAA once suggested it was developing to deter music downloads, but it's in the same spirit.

And here's the patch from First 4 Internet Ltd, the British company that developed the DRM software .

"This Service Pack removes the cloaking technology component that has been recently discussed in a number of articles published regarding the XCP Technology used on SONY BMG content protected CDs." [our emphasis]

The note continues: "This component is not malicious and does not compromise security. However to alleviate any concerns that users may have about the program posing potential security vulnerabilities, this update has been released to enable users to remove this component from their computers."

But wait! Don't do that just yet...

Anti-malware company F-Secure discusses the Sony DRM software here. F-Secure says its rootkit detection software will spot the hidden files, but strongly advises users not to remove it using its Blacklight software, and instead advises users to contact Sony.

"If you find this rootkit from your system, we recommend you don't remove it with our products. As this DRM system is implemented as a filter driver for the CD drive, just blindly removing it might result in an inaccessible CD drive letter," advises F-Secure.

It is alarming how little outrage there is from ordinary PC users. While Register readers are well versed in the restrictions of DRM and the dangers of malware, there's little sign the public shares this knowledge.

Incredibly, the Sony DRM malware has been out on the market for eight months and is bundled on 20 CD titles. Sony said it hadn't received a single complaint until this week. So, disturbingly, most people either haven't run into serious problems yet, or even more disturbingly, don't find the Sony DRM particularly onerous. We pray it's not the latter.

However, Sony's decision to offer a 'patch' that fails to remove the DRM code suggests it isn't too concerned by the howls of outrage heard this week from sophisticated PC users.

And with this level of apathy, the music giants will be emboldened to try these techniques again. And again. And again. ®

High performance access to file storage

More from The Register

next story
Obama allows NSA to exploit 0-days: report
If the spooks say they need it, they get it
Samsung Galaxy S5 fingerprint scanner hacked in just 4 DAYS
Sammy's newbie cooked slower than iPhone, also costs more to build
Putin tells Snowden: Russia conducts no US-style mass surveillance
Gov't is too broke for that, Russian prez says
Snowden-inspired crypto-email service Lavaboom launches
German service pays tribute to Lavabit
Mounties always get their man: Heartbleed 'hacker', 19, CUFFED
Canadian teen accused of raiding tax computers using OpenSSL bug
One year on: diplomatic fail as Chinese APT gangs get back to work
Mandiant says past 12 months shows Beijing won't call off its hackers
Call of Duty 'fragged using OpenSSL's Heartbleed exploit'
So it begins ... or maybe not, says one analyst
prev story

Whitepapers

Top three mobile application threats
Learn about three of the top mobile application security threats facing businesses today and recommendations on how to mitigate the risk.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Five 3D headsets to be won!
We were so impressed by the Durovis Dive headset we’ve asked the company to give some away to Reg readers.
SANS - Survey on application security programs
In this whitepaper learn about the state of application security programs and practices of 488 surveyed respondents, and discover how mature and effective these programs are.